Faults, Causes And Remedies - Wilo -Control SC-Fire Electric A2P Installation And Operating Instructions Manual

10 Faults, causes and remedies

DANGER! Risk of death!
There is a risk of fatal injury from electric shock when working on electrical devices. Have
faults remedied by qualified skilled personnel only! Follow the safety instructions under
chapter 2.
Before performing any work to remedy malfunctions, disconnect the device from the power
supply, and make sure it cannot be switched back on by unauthorised persons.
10.1 Fault indication
When a fault is observed, the corresponding LED fault indicator turns on, the contact of the corresponding
fault signal is activated and the fault is displayed on the LCD (fault code number). An additional buzzer
sounds for certain faults. This alarm can be switched off with the button "BUZZER OFF" (Fig. 2, pos. 9).
It is possible to clear the fault by pushing the button "RESET" (Fig. 2, pos. 11) (level 2 required) or by following
the steps described in the menu 6.1.0.0 (level 3 required):
10.2 Fault history
The fault history works according to the FIFO (First In First Out) principal and it allows the consultation of the
previous 16 arising faults.
The fault history can be consulted using menus 6.1.0.1 to 6.1.1.6 (level of access 1).
Code Fault
E54.0 No bus communication
with the HMI PCB
E54.5 No bus communication
with the slave control
board
E4.0 Undervoltage
WILO SE 01/2017
Causes
Connection with the HMI PCB
interrupted
Connection with the slave
control board interrupted
Software integrity error
Connection voltage on mains side
too low
Remedies
Check connection
Request customer service
Check connection
Request customer service
Check the connection
voltage/network voltage, verify
the fuses
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